滇东南7年生不同种源杉木生长与变异研究

Study on growth and variation of 7-year old Chinese fir from different provenances in Southeast Yunnan

探究不同种源杉木在滇东南地区的适应性,为荒山宜地造林或树种更新选用最优种源提供科学依据,为滇东南片区培育优良森林资源、木材、弥补用材林紧缺、造林成活率低、提高森林资源利用率及植被覆盖度等造林优良种源提供科学参考。结果表明在不同种源7年生杉木试验中广南县乡土种源试验因子树高、胸径和蓄积量生长变异分析比其他种源表现更优;不同种源7年生杉木生长量在树高、胸径、蓄积量之间差异显著(P<0.01),因此在滇东南地区选用杉木造林时应最先选择广南县乡土种源,遵循适地适树原则,更好地体现出生态效益和经济效益,让绿水青山变金山银山。

This paper explored the adaptability of different seed sources of Chinese fir in Southeast Yunnan in order to provide scientific basis for the selection of the best seed sources for afforestation in barren mountains or tree species renewal,and provide scientific reference for cultivating excellent forest resources and wood,making up for the shortage of timber forest,low survival rate of afforestation,improving the utilization rate of forest resources and vegetation coverage in Southeast Yunnan.The results showed that the growth variation analysis of tree height,DBH and stock volume of local provenances in Guangnan County was the best compared with other provenances;the growth of 7-year old Chinese fir from different provenances had significant differences in tree height,DBH and stock volume(P<0.01).Therefore,the local provenances of Guangnan County should be selected first in the selection of Chinese fir for afforestation in Southeast Yunnan,and the principle of suitable location and suitable tree should be followed to better reflect the ecological and economic benefits,so as to transform the green waters and mountains into golden mountains and silver mountains.